Form ac 42c 2025

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The document is a draft advisory circular (AC) from the U.S. Department of Transportation's Federal Aviation Administration (FAA) providing guidance on obtaining operational approval for Extended Operations (ETOPS) and polar operations under Title 14 of the Code of Federal Regulations. It outlines the requirements for conducting ETOPS with two-engine and multi-engine airplanes, including regulations, maintenance, training, and operational procedures necessary for safe long-range flights beyond specified distances from adequate airports. The AC also discusses the evolution of ETOPS regulations, application processes, validation flights, and specific considerations for operations in polar regions.

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